RAILWAY CAR BODY STRUCTURES AND METHODS OF MAKING THEM

摘要

This present invention relates to a railway car body structure running at a high speed and a production method thereof. To reduce vibration and noise and to prevent influences of outdoor pressure variations on passengers in the case of a high-speed railway car, the weight of the car body structure must be reduced and its pressure resistance must be improved. The present invention is characterized in that each of the side constructions, roof construction and end constructions and floor plates of an underframe is formed by plate members obtained by joining two surface members, a core member and binding members through metal-to-metal bonding. The sheet thickness of the surface member on an outdoor side is made greater than that of the surface member on an indoor side. The present invention provides a production method of a body structure wherein the plate members are formed as a block and a plurality of blocks are joined so as to form the side constructions, roof construction of the floor plates of the underframe.